22211222022 has 24 divisors (see below), whose sum is σ = 52499252520. Its totient is φ = 6730673280.

The previous prime is 22211221999. The next prime is 22211222029. The reversal of 22211222022 is 22022211222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22211221986 and 22211222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211222029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56088747 + ... + 56089142.

It is an arithmetic number, because the mean of its divisors is an integer number (2187468855).

Almost surely, 2^22211222022 is an apocalyptic number.

22211222022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22211222022 is an abundant number, since it is smaller than the sum of its proper divisors (30288030498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22211222022 is a wasteful number, since it uses less digits than its factorization.

22211222022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112177908 (or 112177905 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22211222022 its reverse (22022211222), we get a palindrome (44233433244).

The spelling of 22211222022 in words is "twenty-two billion, two hundred eleven million, two hundred twenty-two thousand, twenty-two".